Effect of Mild Temperature Stress on Reproduction Dynamics and Yield of Chickpea (Cicer Arietinum L.)

Bahuguna, R. N and Shah, D. and Jha, J. and et al, . (2012) Effect of Mild Temperature Stress on Reproduction Dynamics and Yield of Chickpea (Cicer Arietinum L.). Indian Journal Plant Physiology, 17 (1). pp. 1-8.

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A field study was conducted to examine the effect of mild temperature stress (MTS) on reproduction dynamics and yield components of two prominent chickpea genotypes viz. Pusa 1103 (desi) and Pusa 1105 (kabuli). Exposure to MTS was given by raising the plants in a polytunnel where the average air temperature was moderately higher (~5oC) than ambient. The rate of both flower and pod production was higher under ambient temperature. Days to initiation of flowering and podding was advanced by 12 and 10 days, respectively and this duration of flower and pod production increased significantly under MTS. No significant effect of MTS occurred on number of flowers produced per plant but number of pods per plant decreased considerably due to higher flower abortion and reduced pod set. Slower pod growth rate under MTS affected seed size in Pusa 1105 and thus, resulted in higher yield loss per plant. With higher impairment of reproductive development, Pusa 1105 was found to be more sensitive to MTS as compared to Pusa 1103. Overall, MTS showed significant impact on reproductive dynamics followed by reduced yield. Thus, predicted moderate increase in air temperature under future climate change scenario might be critical for the cool-season chickpea crop.

Item Type: Article
Additional Information: Authors are grateful to Professor Neil C. Turner, Winthrop Research Professor, The UWA Institute of Agriculture and Centre for Legumes in Mediterranean Agriculture, The University of Western Australia, for his valuable comments and suggestions in improving the manuscript. Financial support received through ICAR Network Project on Climate Change (NPCC) is duly acknowledged.
Uncontrolled Keywords: Cicer arietinum, mild temperature stress, flower/pod production rate, flower abortion, yield
Author Affiliation: Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi–110012
Subjects: Plant Protection
Divisions: Chickpea
Depositing User: Mr Siva Shankar
Date Deposited: 20 Jun 2012 05:58
Last Modified: 20 Jun 2012 05:59
URI: http://eprints.icrisat.ac.in/id/eprint/6114

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